/**
 * Copyright 2010 The Apache Software Foundation
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.hadoop.hbase.client;

import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;

/**
 * Read-only table descriptor.
 */
public class UnmodifyableHTableDescriptor extends HTableDescriptor {
	/** Default constructor */
	public UnmodifyableHTableDescriptor() {
		super();
	}

	/*
	 * Create an unmodifyable copy of an HTableDescriptor
	 * @param desc
	 */
	UnmodifyableHTableDescriptor(final HTableDescriptor desc) {
		super(desc.getName(), getUnmodifyableFamilies(desc), desc.getValues());
	}

	/*
	 * @param desc
	 * @return Families as unmodifiable array.
	 */
	private static HColumnDescriptor[] getUnmodifyableFamilies(final HTableDescriptor desc) {
		HColumnDescriptor[] f = new HColumnDescriptor[desc.getFamilies().size()];
		int i = 0;
		for (HColumnDescriptor c : desc.getFamilies()) {
			f[i++] = c;
		}
		return f;
	}

	/**
	 * Does NOT add a column family. This object is immutable
	 * @param family HColumnDescriptor of familyto add.
	 */
	@Override
	public void addFamily(final HColumnDescriptor family) {
		throw new UnsupportedOperationException("HTableDescriptor is read-only");
	}

	/**
	 * @param column
	 * @return Column descriptor for the passed family name or the family on
	 * passed in column.
	 */
	@Override
	public HColumnDescriptor removeFamily(final byte[] column) {
		throw new UnsupportedOperationException("HTableDescriptor is read-only");
	}

	/**
	 * @see org.apache.hadoop.hbase.HTableDescriptor#setReadOnly(boolean)
	 */
	@Override
	public void setReadOnly(boolean readOnly) {
		throw new UnsupportedOperationException("HTableDescriptor is read-only");
	}

	/**
	 * @see org.apache.hadoop.hbase.HTableDescriptor#setValue(byte[], byte[])
	 */
	@Override
	public void setValue(byte[] key, byte[] value) {
		throw new UnsupportedOperationException("HTableDescriptor is read-only");
	}

	/**
	 * @see org.apache.hadoop.hbase.HTableDescriptor#setValue(java.lang.String, java.lang.String)
	 */
	@Override
	public void setValue(String key, String value) {
		throw new UnsupportedOperationException("HTableDescriptor is read-only");
	}

	/**
	 * @see org.apache.hadoop.hbase.HTableDescriptor#setMaxFileSize(long)
	 */
	@Override
	public void setMaxFileSize(long maxFileSize) {
		throw new UnsupportedOperationException("HTableDescriptor is read-only");
	}

	/**
	 * @see org.apache.hadoop.hbase.HTableDescriptor#setMemStoreFlushSize(long)
	 */
	@Override
	public void setMemStoreFlushSize(long memstoreFlushSize) {
		throw new UnsupportedOperationException("HTableDescriptor is read-only");
	}

	//  /**
	//   * @see org.apache.hadoop.hbase.HTableDescriptor#addIndex(org.apache.hadoop.hbase.client.tableindexed.IndexSpecification)
	//   */
	//  @Override
	//  public void addIndex(IndexSpecification index) {
	//    throw new UnsupportedOperationException("HTableDescriptor is read-only");
	//  }
}
